I become unable to bring in a different pokemon and refreshing the battle doesn't do anything. Forfeiting seems to be the only way to end this.. Quite frustrating when I have to forfeit three games in a row while trying to suspect ladder.

I just a bug similar to Improbable's and Charon's: although u-turn works properly most of the time, in a recent game a similar thing happenend -- although I got a different error:
Error parsing: callback|decision
Error: TypeError: 'null' is not an object

Log:

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Battle between Wicked Slayer and AQuantumLeaf started!
Wicked Slayer sent out Barrage (Machamp)!
AQuantumLeaf sent out Politoed!
Politoed's Drizzle made it rain!Turn 1
Politoed used Hydro Pump!
The foe's Barrage lost 100% of its health!
The foe's Barrage fainted!
Wicked Slayer sent out Revolution (Ferrothorn)!Turn 2
AQuantumLeaf called Politoed back!
AQuantumLeaf sent out Ferrothorn!
The foe's Revolution used Power Whip!
A critical hit! It's not very effective... Ferrothorn lost 20% of its health!
The foe's Revolution is hurt by Ferrothorn's Iron Barbs!
Ferrothorn restored HP using its Leftovers!Turn 3
The foe's Revolution used Thunder Wave!
Ferrothorn was paralyzed! It may be unable to move!
Ferrothorn used Gyro Ball!
It's not very effective... The foe's Revolution lost 17% of its health!
Ferrothorn is hurt by the foe's Revolution's Iron Barbs!
Ferrothorn restored HP using its Leftovers!
Turn 4
The foe's Revolution used Stealth Rock!
Pointed stones float in the air around your team!
Ferrothorn is paralyzed! It can't move!
Ferrothorn restored HP using its Leftovers!Turn 5
Wicked Slayer called Revolution back!
Wicked Slayer sent out Igneous (Volcarona)!
Ferrothorn is paralyzed! It can't move!
Ferrothorn restored HP using its Leftovers!Turn 6
AQuantumLeaf called Ferrothorn back!
AQuantumLeaf sent out Keldeo!
Pointed stones dug into Keldeo!
The foe's Igneous used Fiery Dance!
A critical hit! It's not very effective... Keldeo lost 23% of its health!Turn 7
Keldeo used Hydro Pump!
It's super effective! The foe's Igneous lost 100% of its health!
The foe's Igneous fainted!
Wicked Slayer sent out Revolution (Ferrothorn)!Turn 8
AQuantumLeaf called Keldeo back!
AQuantumLeaf sent out Genesect!
Pointed stones dug into Genesect!
Genesect's Download raised its Special Attack!
The foe's Revolution used Power Whip!
The attack of the foe's Revolution missed!Turn 9
Genesect used Flamethrower!
It's super effective! The foe's Revolution lost 70% of its health!
The foe's Revolution fainted!
Wicked Slayer sent out Psycho (Alakazam)!Turn 10
AQuantumLeaf called Genesect back!
AQuantumLeaf sent out Politoed!
Pointed stones dug into Politoed!
The foe's Psycho used Psychic!
A critical hit! Politoed lost 88% of its health!
Politoed fainted!
Wicked Slayer: honestly not sure how i feel about siczor though
Wicked Slayer: i just put in this team
AQuantumLeaf: I used to have one -- didn't get the most out of it, but I suspect I wasn't using it well
AQuantumLeaf sent out Landorus-Therian!
Pointed stones dug into Landorus-Therian!
Landorus-Therian intimidates the foe's Psycho!
The foe's Psycho's Attack fell!Turn 11
Landorus-Therian used U-turn!
A critical hit! It's super effective! The foe's Psycho lost 100% of its health!
The foe's Psycho fainted!
Error parsing: callback|decision
Error: TypeError: 'null' is not an object
Inactive players will forfeit in 90 seconds. (requested by Wicked Slayer)
Inactive players will forfeit in 60 seconds.
Inactive players will forfeit in 30 seconds.
Wicked Slayer forfeited.
AQuantumLeaf won the battle!
Ladder updating...
Wicked Slayer left.
Wicked Slayer's rating: 1626 → 1624
(-2 for losing)
AQuantumLeaf's rating: 1806 → 1811
(+5 for winning)

I just a bug similar to Improbable's and Charon's: although u-turn works properly most of the time, in a recent game a similar thing happenend -- although I got a different error:
Error parsing: callback|decision
Error: TypeError: 'null' is not an object

Log:

Hide(Move your mouse to the hide area to reveal the content)Show HideHide Hide

Battle between Wicked Slayer and AQuantumLeaf started!
Wicked Slayer sent out Barrage (Machamp)!
AQuantumLeaf sent out Politoed!
Politoed's Drizzle made it rain!Turn 1
Politoed used Hydro Pump!
The foe's Barrage lost 100% of its health!
The foe's Barrage fainted!
Wicked Slayer sent out Revolution (Ferrothorn)!Turn 2
AQuantumLeaf called Politoed back!
AQuantumLeaf sent out Ferrothorn!
The foe's Revolution used Power Whip!
A critical hit! It's not very effective... Ferrothorn lost 20% of its health!
The foe's Revolution is hurt by Ferrothorn's Iron Barbs!
Ferrothorn restored HP using its Leftovers!Turn 3
The foe's Revolution used Thunder Wave!
Ferrothorn was paralyzed! It may be unable to move!
Ferrothorn used Gyro Ball!
It's not very effective... The foe's Revolution lost 17% of its health!
Ferrothorn is hurt by the foe's Revolution's Iron Barbs!
Ferrothorn restored HP using its Leftovers!
Turn 4
The foe's Revolution used Stealth Rock!
Pointed stones float in the air around your team!
Ferrothorn is paralyzed! It can't move!
Ferrothorn restored HP using its Leftovers!Turn 5
Wicked Slayer called Revolution back!
Wicked Slayer sent out Igneous (Volcarona)!
Ferrothorn is paralyzed! It can't move!
Ferrothorn restored HP using its Leftovers!Turn 6
AQuantumLeaf called Ferrothorn back!
AQuantumLeaf sent out Keldeo!
Pointed stones dug into Keldeo!
The foe's Igneous used Fiery Dance!
A critical hit! It's not very effective... Keldeo lost 23% of its health!Turn 7
Keldeo used Hydro Pump!
It's super effective! The foe's Igneous lost 100% of its health!
The foe's Igneous fainted!
Wicked Slayer sent out Revolution (Ferrothorn)!Turn 8
AQuantumLeaf called Keldeo back!
AQuantumLeaf sent out Genesect!
Pointed stones dug into Genesect!
Genesect's Download raised its Special Attack!
The foe's Revolution used Power Whip!
The attack of the foe's Revolution missed!Turn 9
Genesect used Flamethrower!
It's super effective! The foe's Revolution lost 70% of its health!
The foe's Revolution fainted!
Wicked Slayer sent out Psycho (Alakazam)!Turn 10
AQuantumLeaf called Genesect back!
AQuantumLeaf sent out Politoed!
Pointed stones dug into Politoed!
The foe's Psycho used Psychic!
A critical hit! Politoed lost 88% of its health!
Politoed fainted!
Wicked Slayer: honestly not sure how i feel about siczor though
Wicked Slayer: i just put in this team
AQuantumLeaf: I used to have one -- didn't get the most out of it, but I suspect I wasn't using it well
AQuantumLeaf sent out Landorus-Therian!
Pointed stones dug into Landorus-Therian!
Landorus-Therian intimidates the foe's Psycho!
The foe's Psycho's Attack fell!Turn 11
Landorus-Therian used U-turn!
A critical hit! It's super effective! The foe's Psycho lost 100% of its health!
The foe's Psycho fainted!
Error parsing: callback|decision
Error: TypeError: 'null' is not an object
Inactive players will forfeit in 90 seconds. (requested by Wicked Slayer)
Inactive players will forfeit in 60 seconds.
Inactive players will forfeit in 30 seconds.
Wicked Slayer forfeited.
AQuantumLeaf won the battle!
Ladder updating...
Wicked Slayer left.
Wicked Slayer's rating: 1626 → 1624
(-2 for losing)
AQuantumLeaf's rating: 1806 → 1811
(+5 for winning)

Is it relevant that U-Turn KO'd alakazam?

Click to expand...

I could be wrong, but to me that looks like just a text / graphical issue, the move should still work properly. A similar error occurs when you use the item Red Card as well.

killed an opponent with u-turn and neither side was given the option to switch pokemon and both of us were "waiting for the opponent."

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UnboundSentience joined.
27297 joined.
Format: OU
Rated battle
Rule: Sleep Clause
Rule: Species Clause
Rule: OHKO Clause
Rule: Moody Clause
Rule: Evasion Clause
27297's team:
Tyranitar / Latios / Stoutland / Jellicent / Forretress / Scizor
UnboundSentience's team:
Weavile / Terrakion / Haxorus / Ferrothorn / Infernape / Scizor
Battle between UnboundSentience and 27297 started!
UnboundSentience sent out Liberation (Scizor)!
27297 sent out Tyranitar!
Tyranitar's Sand Stream whipped up a sandstorm!
Turn 1
27297 called Tyranitar back!
27297 sent out Forretress!
The foe's Liberation used Bug Bite!
It's not very effective... Forretress lost 23% of its health!
The foe's Liberation lost some of its HP!
The sandstorm rages.
Forretress restored HP using its Leftovers!
Turn 2
The foe's Liberation used Bug Bite!
It's not very effective... Forretress lost 23% of its health!
The foe's Liberation lost some of its HP!
Forretress used Toxic Spikes!
Poison spikes were scattered all around the feet of the foe's team!
The sandstorm rages.
Forretress restored HP using its Leftovers!
Turn 3
UnboundSentience called Liberation back!
UnboundSentience sent out Dr. Stall (Ferrothorn)!
Forretress used Toxic Spikes!
Poison spikes were scattered all around the feet of the foe's team!
The sandstorm rages.
Forretress restored HP using its Leftovers!
Turn 4
27297 called Forretress back!
27297 sent out Jellicent!
The foe's Dr. Stall used Substitute!
The foe's Dr. Stall put in a substitute!
The foe's Dr. Stall lost 25% of its health!
The sandstorm rages.
Jellicent is buffeted by the sandstorm!
The foe's Dr. Stall restored HP using its Leftovers!
Jellicent restored HP using its Leftovers!
Turn 5
Jellicent used Taunt!
The foe's Dr. Stall fell for the taunt!
The foe's Dr. Stall can't use Leech Seed after the taunt!
The sandstorm rages.
Jellicent is buffeted by the sandstorm!
Jellicent restored HP using its Leftovers!
The foe's Dr. Stall restored HP using its Leftovers!
Turn 6
Jellicent used Scald!
It's not very effective... The foe's Dr. Stall's substitute took the damage!
The foe's Dr. Stall used Power Whip!
It's super effective! Jellicent lost 67% of its health!
The sandstorm rages.
Jellicent is buffeted by the sandstorm!
The foe's Dr. Stall restored HP using its Leftovers!
Jellicent restored HP using its Leftovers!
Turn 7
27297 called Jellicent back!
27297 sent out Forretress!
The foe's Dr. Stall used Power Whip!
It's not very effective... Forretress lost 7% of its health!
The sandstorm rages.
Forretress restored HP using its Leftovers!
The foe's Dr. Stall restored HP using its Leftovers!
The foe's Dr. Stall's taunt wore off!
Turn 8
Forretress used Spikes!
Spikes were scattered all around the feet of the foe's team!
The foe's Dr. Stall used Leech Seed!
Forretress was seeded!
The sandstorm rages.
Forretress restored HP using its Leftovers!
Forretress's health is sapped by Leech Seed!
Turn 9
Forretress used Spikes!
Spikes were scattered all around the feet of the foe's team!
The foe's Dr. Stall used Gyro Ball!
A critical hit! It's not very effective... Forretress lost 18% of its health!
The sandstorm rages.
Forretress restored HP using its Leftovers!
Forretress's health is sapped by Leech Seed!
Turn 10
Forretress used Volt Switch!
It's not very effective... The foe's Dr. Stall's substitute took the damage!
27297 called Forretress back!
27297 sent out Tyranitar!
The foe's Dr. Stall used Power Whip!
It's super effective! Tyranitar lost 61% of its health!
The sandstorm rages.
Tyranitar restored HP using its Leftovers!
Turn 11
Tyranitar used Ice Beam!
The foe's Dr. Stall's substitute faded!
The foe's Dr. Stall used Gyro Ball!
It's super effective! Tyranitar lost 45% of its health!
Tyranitar fainted!
The sandstorm rages.
27297 sent out Latios!
Turn 12
Latios used Hidden Power!
A critical hit! It's super effective! The foe's Dr. Stall lost 100% of its health!
The foe's Dr. Stall fainted!
The sandstorm rages.
Latios is buffeted by the sandstorm!
UnboundSentience sent out Death Wish (Weavile)!
The foe's Death Wish was badly poisoned!
The foe's Death Wish is hurt by the spikes!
The foe's Death Wish is exerting its pressure!
Turn 13
The foe's Death Wish used Night Slash!
It's super effective! Latios lost 94% of its health!
The foe's Death Wish lost some of its HP!
Latios fainted!
The sandstorm rages.
The foe's Death Wish is buffeted by the sandstorm!
The foe's Death Wish was hurt by poison!
27297 sent out Scizor!
Turn 14
The foe's Death Wish used Ice Shard!
It's not very effective... Scizor lost 13% of its health!
The foe's Death Wish lost some of its HP!
Scizor used U-turn!
It's super effective! The foe's Death Wish lost 51% of its health!
The foe's Death Wish fainted!
Error parsing: callback|decision
TypeError: Cannot set property 'slot' of null
at Battle.getPokemon (http://play.pokemonshowdown.com/js/battle.js?v0.7.17.9:3751:31)

I was battling someone and they used Volt Switch, fainting my pokemon. but he wasn't able to switch to a new pokemon and I wasn't able to do anything. I think that qualifies as a bug cause I know in the actual games, it wouldn't do that.

Moderator

I was playing the seasonal tier and my opponent forfeited and for some odd reason it gavee him points for winning and deducted points from me. My handle is saucy wench.

Click to expand...

Yeah, something like this also just happened to me. I was in the seasonal tier, won the a battle, but then it said I lost did points the wrong way. In addition, I noticed after the battle that the names and sprites in the battle area were showing my opponent playing himself, and me not in the battle at all:

Actually I found something similar to V0x's problem, although it happened to me after using the function "share replay". I had a normal battle (no bugs whatsoever) but when I tried to obtain the replay, well, this is the result:

For some weird reason i cant here in battle music/sounds i dunno why i dont have my thing on mute on pc or browser i even tested by watching a youtube video and sound comes outa there but when i go to PS and go in a battle its completely silent :/ dont know if its a PC problem or a PS bug

This bug has already been reported a bunch. When Hidden Power gets Encored, its type automatically changes to Dark for some reason. So, Wynaut's type didn't get changed, Hidden Power's did. So, that explains how you got a Super Effective hit to end the game.